Characteristics of Living Things

Obtain and Use Energy You eat food to get energy Photosynthesis / Cellular Respiration Anabolism – synthesizing complex substances from simple substances Catabolism – breaking down complex substances into simple substances Metabolism – anabolism and catabolism

Respond Living Things Respond to Their Environment causes of reactions are called stimuli (singular stimulus) light, temperature, odor, sound, gravity, water, pressure Taxis – reaction to stimulus, Positive, Negative Homeostasis – the process by which organisms respond to stimuli in ways that keep their body suitable for life.

Grow and Develop Living Things Grow and Develop most organisms – cycle of change – development You are developing right now

Reproduce Living Things Reproduce Because all organisms eventually die, they must make more of themselves Sexual and Asexual

Living Things Are Organized